Improvement in pumps



NITED STATES PATENT OFFICE.

THEOD-ORE J. MGGOWAN, OF CINCINNATI, OHIO, ASSIGNOR TO MCGOVAN BROTHERS PUMP AND MACHINE COMPANY, OF SAME PLACE.

aMPRovEMENT IN PUMPS.

Specification forming part of Letters Patent No. 123,636, dated February 13, 1572.

'reaction and stoppage of the valves; IV, a

pump in which the momentum of the water in the suction-pipe is utilized; V, a pump which will deliver the water continuously and very rapidly.

In the accompanying drawing, Figure 1 is a vertical section through the center of my improved pump at the line l l of Fig. 3. Fig.

2 is a vertical section through the center of my pu'mp at the line2 2 of Fig. 3. Fig. 3 is a plan of a horizontal transverse section of my pump at line 4 4 of Fig. 2. Fig. 4 is a vertical section of the valves and their attendant waterpassages and a vacuum-chamber at the line 3 '3 of Fig. 3. Fig. 5 is a view' of the bottom of the upper section of the pump made at line 4 of Fig. 2.

General Description.

A is the main cylinder, in which works a piston, B. At the upper side of piston B is the piston-rod C. This rod C passes up through a stuffing-box, D, and is operated by any proper mechanism above the cylinder. M is the supply-pipe. N is a valve, allowing the passage of water from the supply-pipe M to a horizon- This conduit R, at the upper side of that end of R opposite'which valve N is, connects with .cylinder A, as shown in Fig. 1. N' is a valve, for regulating the admission of water from supply-pipe S, which latter connects atl the upper side of one end by means of hole S in its top with the vertical water-passage K. (See Figs. 2 and 5.) An opening, J, at the upper end of passage K,

' connects that passage'with the main cylinder A. P is a valve, allowing water from conduit R to flow into chamber Q. This chamber Q is above the valves P and P', and both of these valves open into it. (See Figs. 1 and 4.) P' is a valve, regulating the flow of Water from conduit S into chamber Q. Chamber Q connectsV with conduit T, which latter connects, y

through oriiicel T', with an air-chamber, F. This air-chamber occupies all of the belt of space between the outside of cylinder Aland the outer or incasing-cylinder excepting the space occupied by vertical discharge-pipe II and vertical conduit K. These latter, H and K, divide this air-chamber into two divisions, one of which is large and the other quite small. A vacuum-chamber, U, placed over Q but entirely separate from it, extends into conduit U', thence into conduit U", and thence into supply-pipe M. Conduit U" is the only-means of ingress to and egress from vacuum-chamber U. H is the discharge-conduit, (see Figs. 1 and 4,) and separated from the air-chamber F by partitions W W, extending nearly to the bottom of the conduit; at the bottom of H is anopening in each of the sides or partitions W W of H. vThese openings connect H with the air-chamberF. kAt the top of H is' the mouth or delivery-pipe of discharge-conduit H'.

Mode of Operation.

The manner in which my improved pump operates is as follows: Suppose the pump to be empty of water. When the piston B is lifted from the bottom of the cylinder A a vacuum 'is created under the bottom of said piston, and,

to ill said vacuum, water flows from supplypipe M, raises valve N and passes into It, and

thence up into A, under piston B, as indicated by the solid arrows in Figs. l and 2. .As the piston rises and the water is ilowing into the cylinder below it, the air above said piston is forced out, as indicated by broken arrows, through J, the only orifice in the top of the cylinder; thence into vertical conduit K, (see Fi g. 2; )down through this latter conduit through S' into horizontal conduit S; thence through S until it strikes against valve N' 5 at which point, being prevented from passing through said valve N', it passes upward through valve P, (see Fig. 4,) into chamber Q; thence down into horizontal conduit T; then along conduit T to orifice T', (see Figs. 2 and 3,) through which it passes up into the lower part of air-chamber 'said chamber.

F; and,passingaround the cylinder, indsitsway into vertical discharge-conduit H; and thence out ofthe mouth of the discharge-pipe H. When the piston B has reached the top of the main cylinder A, and all that portion ofthe cylinder which is below the piston is full of water, the piston then begins to descend and to force down the water in cylinder A. The water forced down returns into conduit R, then along R to valve N, where,being prevented by said valve Nfrom flowing back into supply-pipe M, it flows up through valve P, (see Fig. 1,) and into cham ber Q. From chamber Q it passes down into conduit T, thence along conduit T to orifice T', through which latter it passes up into the airchamber F, and, rising, compresses the air in That portion of the water thus coming into said chamber, and which is below the edges `W W of the discharge-pipe, immediately ilows into said discharge-pipe, then up said pipe and out of its mouth H.

During the descent of the piston the. operation of filling the vacuum above the piston is as follows: The air in cylinder A having already been expelled from above the piston, the piston in descending, and while driving out the water below it, as afore described, at the same timeforms a vacuum in the cylinder above the piston. To lill this vacuum the water flows, as shown by arrows, from the supplypipe M through valve N, (its companion valve being closedV by the pressure of the water forced down under the piston,) and thence through horizontal conduit S, (seeFig. 3,) and up through orifice S into vertical conduit K, and thence through orifice J into the main cylinderI A. Vhen the piston has reached the bottom of the stroke the interior ofthe cylinder A above the piston B will be full of water. As the piston B begins its upward stroke valve P will close andvalve N open, and the cylinder A will immediately take water below the piston. As Vthe piston again rises the water in the cylinder A above the piston will be forced up and back through orifice J, as shown by arrows, into conduit K; thence do wn conduit Kthrou gh S into conduit S; thence along conduit S to valve N', which, being closed, prevents all egress of said water into supply-pipeM; thence the water passes up through valve P into chamber Q, from Q into conduit T, thence through oriice T into air-chamber F 5 and passingdown under the edges W W of discharge-pipe H, passes up through the discharge-pipe and out of the mouth of said discharge pipe. The elasticity of the compressed air in the airchamber F aids in making the delivery of water from the discharge-pipe continuous and uniform.

What I claim as new is l. The vertical conduit K,discharge-pi1 e H, and air-chamber F when formed around the periphery of the cylinder A and between the periphery of saidcylinder and the interior of a second cylinder surrounding cylinder A by dividin g the annular space between said two cylinders by partitions in such manner that each of the divisions shall occupy the entire width of said annular space, and when the whole of said partitions and cylinders are formed in one solid casting, substantially as and for the purposes set forth.

2. TheV straight water-conduit T, when one end of same is located between the conduit U and the suction-valve N, and when said conduit T is parallel to the water-conduits lt and S, substantially as and for the purposes set forth.

THEODORE J. MCGOWAN. Witnessesz y A P. M. SHUEY, C. G. HALE. 

